Players, coaches, officials, medical staff, neurologists and concussion spotters could all be subject to discipline, either in the form of fines or suspensions, Rapoport adds.

The decision comes after St. Louis Rams quarterback Case Keenum failed to leave the field in Week 11 after being concussed late in the fourth quarter. Keenum’s head hit the ground, he immediately clutched his helmet and had to be lifted off the ground by a teammate. The NFL opted not to punish the Rams for failing to take Keenum out of the game.